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Adult Baby

Noun
Also referred to as AB
A person who acts like an infant or baby. Normally dresses up in a variety of baby like clothing like diapers, onesies, bibs, sleepers, and kid like shirts. Some adult babies find comfort and security in diapers and being cared by a mother or father. The age range for adult babies can vary from newborns to toddlers. Adult babies do not find sexual arousal out of diapers unlike diaper lovers (DL)
That Adult Baby isn't exactly the most normal. All he does is sit their like a read baby and have his mothers change him.

Adult baby

An Adult that acts like a baby e.g getting their nappy changed by someone else.
"Have you seen that adult baby next door? He's so weird!"
Adult baby by Fernus123 October 14, 2015

baby adult 

An 18-20 year old human.
Mom: "Happy Birthday, son! You're 18 years old today, wow!"
Son: "Thanks, Mom. Yup, I'm an ADULT now! Legally I can do whatever I want and you can't ground me."
Mom: laughs "Adult? You're a BABY adult."

Baby Adult 

A child who has passed the age of 18 but is still not financially independent.
My baby adult still mooches off of us
Baby Adult by LordOfMischief February 15, 2025

Adultbabyitus 

A adult who acts as a baby
Oh no shabnam is a Adultbabyitus!!1!1!1!!!1!11

Adultbabyitus

An adult who’s acts like a baby. Either temporarily or permanent with absolutely no change.
Ew, Lisa! You have Adultbabyitus!
Adultbabyitus by bcshabnamfan2002 October 23, 2025